Improvement in water-meters



J. F. DE NAVARRO & HQC. SERGEANT.

l Liquid Meter.

Patented April16,1872..

` fun:

UNITED STATES ATEN'I" QFFICE.

JOS F. DE NAVARRO AND HENRY O'. SERGEANT, OF NEW YORK, N. Y., ASSIGNORSTO JOS F. DE NAVARRO, OF SAME PLACE.

IMPROVEMENT lN WATER-METERS.

Specification forming part of Letters lPatent No. 125,793, datedApril16, 1872.

DIVISION A.

Specitication describing a certa-in Improvementin Liquid Meters,invented by J os F. im NAVARRO and HENRI' G. SERGEANT, both of the city,county, and State of New York. y This invention relates to water orother liquid meters, in which a swinging or reciprocating piston iscontrolled by a valve of cylindrical construction, having both Vavibratory motion about its axis and a longitudinal movement in directionof the length thereof, within a fixed abutment provided with ports orpassages arranged to conduct the liquid to and pass it from oppositesides ot' the pistonalternately, said valve being hollow and formed withside inlets and outlets in upper and lower or divided sections of it.The improvement consists in a lnovel construction or arrangement offixed ports or passages, in combination with a certain construction ofinlets and outlets :in the valve, whereby the latter is balanced orrelieved from one-sided pressure, so that after being lifted it is freeto drop, unrestrained by lateral pressure.

Figure 1 of the drawing represents a vertical section of a meter havingour improvement I applied to it; Fig. 2, a horizontal section on theline :r a',- Fig. 3, a vertical section at y y, Fig. 2, mainly of thechamber in whichthe valve works; Fig. 4, a longitudinal view of thevalve detached; and Fig. 5, a plan of the valve motion.

The improvement is here shown as applied to a meter similar to thatdescribed in Letters Patent N o. 111,134, dated the 24th day of January, 1871, and the means employed for operating the valve are of alike description to the devices there shown for such purpose. Thus, A isan outer chamber, to which the water or other liquid is admitted as byan inlet, b, and from which it is passed through the valve to oppositesides of thepiston alternately. B is the measuring cylinder or chamber,and G its piston, arranged to swing or work by or in upper and lowerpivots or bearings c c, toward and from opposite sides, alternately, ofan abutment, D. Said abutment is made hollow and with a cylindricalrecess to receive down within it the cylindrical valve E that controlsthe motion of the piston. This valve has a vibratory motion about itsaxis, and an up-anddown movement in direction of the length of it toreverse the action of the piston. To this end, the valve is vibrated inpart by its own weight and in part by the pressure of the water,operating to drop it by means substantially similar to those describedin patent No. 111,134, hereinbefore referred to, and the valve, likethat therein described, is constructed open, top and bottom, and dividedintermediately of its length by a partition, d, into an upperreceiving-chamber or section and lower discharging-chamber, the latterbein gin communication with a main outlet, e; but the inlets and outletsin the valve and ports or passages in the abutment are differentlyconstructed to those described for the valve in said'patent, as here--inafter explained.

As already specified, however, the motion of the present valve issimilar, and the means employed `for operating it may be the same..Thus, on the upper pivot of the swinging piston C is a pinion, f,arranged to gear with a toothed sector, g, that forms a lateralprojection from a h ollow cam, F, which allows of the passage of theliquid through it to the valve, and is arranged so as to turnindependently of thevalve, over which it s concentrically disposed, andforms an open eye to the moving sector. This cam is constructed on itsopposite sides with reversely-arranged or double inclines h, that serve,as the cam is vibrated by the action of Vthe pinion j' on the sector g,in or during the motion of the piston C, to lift the valve by means of across-bar, G, attached to the valvespindle, and resting, bybevel-rollers i, on opposite sides ot' the cam F. The highest elevationof the valve takes place as the piston C approaches the end of itsstroke in either direction, after which the slightest continuation inthe vibratory motion of the cam F leaves .the valve at liberty to drop,by Fits bar G or rollers t', down either two of the opposite in theinclines h, to keep the valve to its turned position during the reversemovement of the cam. Said valve drops, when released from lift by thecam, to eii'ect the turning or reversal of it, as described, in part byits own weight and in part by the inlet uid rushing down through andpressing on it. The valve-stem may be provided with a plunger at itslower end for entry within a dash-pot, to prevent concussion of thevalve in dropping.

The valveseat portion of the abutment is provided with fouroppositely-disposed vertical ports, l l and m m', through either twoopposite ones, Z and m or Z and m', of which the liquid is alternatelyadmitted to and passed from the cylinder by the operation of the valveto keep up the swinging or reciprocating action of the piston. The twofront ports l Z open directly within the cylinder B, but the rear portsm m communicate with vertical spaces or passages n a in the abutment,the one passage n of which connects with the cylinder by an upperopening, o, on the one side of the abutment, while theother passage nconnects with the cylinder by a lower opening, o', on the opposite sideof the abutment. The valve E is provided, above the partition el, withoppositely-disposed inlets r r', and below said partition withoppositely-disposed outlets s,

arranged at right angles with the inlets relatively to the axis of thevalve. These inlets and outlets, as also the lateral portions of thevalve separating them, are of an enlarged width as compared with theports l l and m m.

vBy means of the rear fixed ports m m', in combination with the valve,constructed as described, said valve is balanced, as regards any lateralpressure of the iiuid, inasmuch as it is exposed to the same pressure ateither port m or m that it is at the opposite port lor Z. This balancingof the valve gives it a freedom in dropping which ettectually preventssticking.

Supposing the valve to be in the position represented for it in Fig. 2,the piston is caused to travel in direction of the arrow 2, waterentering the cylinder B from the upper section 0f the valve through theport l, also through the lower opening o by the passage n', as indicatedby the arrows 1 l 1 in Fig. 2. At the same time the exhaust-water passesoff by the port l into the lower or discharging section of the valve,and out to the outlet c through the valve-ports s, as indicated by thearrows 2 2, alsol through the upper opening o, down the vertical passageu, and out through the valve to the exhaust, as indicated by the arrows3 3 3.v In this way the valve is exposed on its sides to opposite orcounteracting pressures, both ot the incoming and outgoing fluid, and

a like balancing exposure takes place under a' reversed position of thevalve also, during the whole action ofthe valve. This prevents stickingof the valve, and allows it to drop as re quired to effect reversal ofthe ports. When the valve is reversed the port l and opening o becomethe inlets for the fluid, and the port l and opening o the outletstherefor. A

What is here claimed, and desired to be secured byl Letters Patent, is-

rlhe combination, with the valveE con structed and operatingsubstantially as described, of the ports m m', the passages u n', theopenings o o', and the ports l l', the whole being arranged in relationwith each other and the abutment D of the cylinder, essentially asspecied.

J. F. DE NAVARRO. Witnesses: HENRY C. SERGEANT. v

FRED. HAYNEs, Fnnn TUscH.

